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Re: [Cfrg] Encrypt in place guidance

"Salz, Rich" <rsalz@akamai.com> Tue, 31 March 2020 23:58 UTC

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From: "Salz, Rich" <rsalz@akamai.com>
To: Robert Moskowitz <rgm-sec@htt-consult.com>, "Blumenthal, Uri - 0553 - MITLL" <uri@ll.mit.edu>, Dan Brown <danibrown@blackberry.com>, "cfrg@ietf.org" <cfrg@ietf.org>
Thread-Topic: [Cfrg] Encrypt in place guidance
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Date: Tue, 31 Mar 2020 23:56:49 +0000
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Subject: Re: [Cfrg] Encrypt in place guidance
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  *   I will write the draft using Speck for 64 bit block.  That will get the draft out and open up for discussion.

Simon and speck are controversial, and almost nobody believed that they weren’t deliberately crippled.  It hasn’t been proven.  But there were enough concerns that ISO rejected them.  See https://rwc.iacr.org/2019/slides/RWC87slides.pdf

I mention all this because I am sure using Speck will be controversial, and you need to be sure that you are willing to take on that battle.

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